Assessment of the efficacy and safety of auricular keloids excision followed by 5-aminolevulinic acid photodynamic therapy

Abstract

Background: Auricular keloids are a significant clinical challenge, which adversely affect the life of the patient at the level of aesthetic and psychological well-being. Despite various treatment modalities, a universally effective therapy has yet to be established. Photodynamic therapy (PDT) offers a promising approach by inhibiting the abnormal proliferation of fibroblasts while minimizing damage to surrounding healthy cells and tissues. This study evaluates the clinical outcomes of auricular keloid patients treated with excision followed by 5-aminolevulinic acid photodynamic therapy (ALA-PDT). Methods: This study included 8 patients diagnosed with auricular keloids based on pathological examination and clinical presentation. Following surgical excision of the auricular keloids, topical 5-ALA solution was applied for 4 h. Then each lesion was irradiated with 120 J/cm² using a red LED (635-nm laser) for 20 min. Patients received 3–5 courses of 5-aminolevulinic acid photodynamic therapy (ALA-PDT) during and after the surgery. Results: Among the 8 patients treated, auricular keloids were completely controlled with the combination therapy. During a follow-up period of 2.7 years (range: 1.8–4.1 years), all patients exhibited excellent outcomes with no recurrence of keloids. Conclusions: The combination of surgical excision and 5-aminolevulinic acid photodynamic therapy (ALA-PDT) is an effective and safe treatment for auricular keloids. This combined approach shows promise as an alternative clinical treatment for managing auricular keloids.

Keywords

• Auricular keloid
• Photodynamic therapy
• Aminolevulinic acid